Die-cutter.



E. L. LIDKE.

DIE CUTTER.

APPLICATION FILED SEPT. 3, 1915.

7 1,199,393. Patented Sept. 26,1916,

4 SHEETS-SHEET l.

E. L. LIDKE.

DIE CUTTER.

APPLICATION FILED SEPT. 3. I915.

1,199,393. Patented Sept. 26,1916. I 2.

4 SHEETS-SHEET 2.

E. L. LIDKE.

DIE CUTTER.

APPLICATION FILED SEPT. :I, 1915.

1 ,1 99,393. Patented Sept. 26, 1916.

4 SHEETS-SHEET 3.

5| II lll llp E. L. LIDKE.

DIE CUTTER.

APPLICATION FILED SEPT. 3. 1915.

1 1 99, 39 3 Patented Sept. 26, 1916.

4 SHEETS-SHEET 4.

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l /31 154 :Ii: 21:? I36 All" EDWARD L. LIDKE, 0F TOLEDO, GHIO.

DIE-CUTTER.

Specification of Letters Patent. Patented S6101). 26, 1916..

Application filed September 3, 1915. Serial No. 48,802.

To all whom it may concern:

Be it known that I, EDWARD L. L1DKE,.a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented a certain new and useful Die-Cutter; and I do hereby declare the following to be a full, clear, and exact description of the invention such as will enable others skilled in the art to which it appertains to make and use the same reference being had to the accompanying drawlugs, and to the characters of reference marked thereon, which form a part of this specification.

My invention relates to die thread cutters and pipe reamers and facers.

It has for its object to provide a means for reaming and facing the end of a pipe and also a means for cutting either taper thread or straight thread.

It also has for its object to provide a micrometric gauge for regulating the cutting of the threads so that the threads will differ micrometrically in diameter.

It also has for its object to provide a means whereby the die will be fed to the pipe uniformly and constantly as the die cutter is operated.

It also has for its object to provide an automatic locking means which will lock the die open upon completion of the work to enable the removal. of the pipe or the die relative to the pipe, with case.

It also has for its object to provide other advantages which may appear from the following description of the invention and from the drawings.

The invention may be contained in many different forms of constructions which come within the purview of my claims hereinafter appended. To show the practicability of my invention I have selected one of such constructions as an example and shall describe it hereinafter. The construction selected is illustrated in the accompanying drawings.

Figure 1 of the drawings illustrates a perspective View of a die cutter, reamer and facer embodying my invention. Fig. 2 is a sectional view taken axially through the device illustrated in Fig. 1. Fig. 3 illustrates a feed engager. Fig. 4: illustrates a sectional view taken through the die guides showing the means whereby the parts of the die are cushioned. Fig. 5 illustrates a sectional view through a dog for yieldingly holding the die, also shown in Fig. 2. Fig.

6 illustrates a sectional view through the die and one of the die guides for controlling the radial movement of the die. trates a disk having ratchet teeth for connecting the actuating means with the die cutter. Fig. 8 illustrates the ratchet dog. Fig. 9 illustrates the micrometric means for regulating the diameter of the thread cut by the die cutter. Fig. 10 is a sectional enlarged view showing the means for locking the micrometric regulator. Fig. 11 illustrates the thrust plate against which the end of the pipe is pressed. Fig. 12 illustrates a modified form of thrust plate. Fig. 13 is a sectional view of the device shown in Fig. 12 showing the engaging pin for connecting the thrust plate or hub with the micrometer. Fig. 14 is an end view of the pipe reamer and facer. Fig. 15 illustrates a sectional view of the reamer or facer. Fig. 16 illustrates the means for connecting the pipe facer and reamer with the cutter which is also shown in Fig. 1. Fig. 17 is a sectional view of a modified structure containing my invention and shOWs particularly a modified form of a means for engaging the feed of the pipe cutter. Fig. 18 illustrates a partial sectional View and perspective view of the feed engager illustrated'in Fig. 13. Fig. 19 illustrates a detent or dog for preventing the die cutter from being pulled entirely from the pipe or lead screw of the die cutter. Fig. 20 illustrates the dog, illustrated in Fig. 19, in position for holding the two parts of the die cutter together and preventing their axial outward movement relative to each other. Fig. 21 illustrates the boss for the disappearing feed engager or coacting means for causing the die cutter to be fed relative to the pipe and also the housing for the detent or dog illustrated in Figs. 19 and 20.

Referring to Fig. 1 1 is acylindrical shell which may be secured to the end of a pipe by means of the thumb screws 2. The shell is provided with a boss 3 in which is located a socketed feed engager 4. The feed engager is circular in form and is movable within the socket 5 formed in the boss 8. It

Fig. 7 illus- 3 is provided with a threaded arcuate face 6 so as to prevent outward movement of the feed engager in the socket 5 by the pressure against the teeth of the thread. The feed engager 4 is also provided with a recess 10 in which is located a spring 11 intermediate the ends of the recess 10 and the socket 5 for causing an inward movement of the feed engager 4. A stem 12 extends through the boss 3 and is connected or is integral with the feed engage-r 4. The outer end of the stem 12 is threaded and is provided with suitable locking nuts 13. A lever or arm 14 is pivotally supported on the stem 12 and is provided with a facial cam 15 while the boss 3 is provided with notch 16 extending diametrically across the end of the boss. The nose of the cam 15 which also extends across the axis of movement of the arm 14 fits into the diametrical recess 16 formed in the boss 10 or it rides upon the end of the boss so that when the arm is turned in one position it releases the feed engager 4 to permit it to be moved by the operation of the spring 11 inwardly relative to the boss 3 and the shell 1 or it withdraws the feed engager from engagement with the feed screw.

The thread of the feed engager 4 meshes or engages the thread on the lead screw 20 which is threaded substantially its entire length and as the lead screw 20 is turned about its axis it is carried rearward rela tive to the shell 1 which is secured to the work.

The reamer and facer are detachably connected to the lead screw 20. Also the dies are connected to the lead screw 20 and may be fed relative to the pipe when the disappearing feed engager 4 engages with the lead screw 20. Due end of the lead screw 20 is connected or is formed integral with a plate 26. The edge of the plate 26 is pro vided with a ratchet 22 about which is located a yoke 23. A ring 24 is secured to the yoke 23 by means of the screws 27 which clamp the yoke in position relative to the ratchet 22 and also relative to the housing 21. The ratchet 22 is provided with teeth 25 which are formed on the edge of the disk 26. The yoke is also provided with a boss 28 which contains a dog or detent 29 for engaging the teeth of the ratchet 25. The dog is provided with a notch 31 which rests upon the head of each tooth 32 in succession as the dog moves relative to the teeth. The dog 29 may be turned about its axis so as to reverse its action relative to the ratchet 25 to cause a reverse motion of the disk relative to the movement of the actuating means. The dog 29 is provided with a stem 35 which extends outward through the boss 28. It is provided with a pin 36 while the boss 28 is provided with a notch 37 which extends diametrically across the end of the boss 28. The stem 35 may be pulled out so as to rest upon the end of the boss 28 which will hold the dog in a disengaging position. It also may be turned by the knob 39 so as to rest in opposite positions in the notch 37 so as to engage the ratchet 25 when the yoke 23 is moved in one or the other direction. The yoke 23 is also provided with a boss 40 in which may be secured a handle 41 of any suitable form for actuating the mechanism.

The disk 26 is provided with upwardly extending bosses 45 which are provided with rods or pins 46 that are located in recesses or cavities 47. The pins 46 are surrounded by springs 48 which are located in the recesses 47. The upper ends of the springs 48 are threaded into a ring 49 and are movable lengthwise relative to the bosses 45. The lower ends of the pins 46 are secured in nuts 50 which close the cavities or recesses 47 and hold the springs 48 in the bosses 45.

Guide bars for permitting the dies to recede from the work are secured to the ring 49 by burs 56. The guide bars 55 extend into the bosses 57 and are movable therein. The guide bars for the dies are provided with a face 61 which is located in a plane at a slight angle to the axis of the cutter 55. The plane of the face 61 is the same as the taper at which the pipe is cut, that is, it is parallel to the plane which is tangential to the taper of the thread portion of the pipe. The outer ends of the dies 60 abut against the surfaces 61. The outer ends of the dies 60 are preferably provided with surfaces which have the same relative angle that the surfaces 61 have with the axis of the cutter. The upper outer corner of the die 60 is rounded while the guide bar for the die is provided with a stepped portion 63. Intermediate the stepped portion 63 and the surface 61 is a shoulder 64 or a rounded portion which fits the rounded corner 65. The stepped portion 63 may be also formed in aplane parallel to the surface 61 in order that it may set against the end of the die 60 and allow the rounded corner 65 to fit into the rounded corner 64 of the die guide bar. Each die 60 is also provided with a notch which is provided with a vertical surface 71. and a surface 72 inclined 60 to the surface 71. Beneath the die 60 is located a dog 7 3 which is spring-pressed by a spring 74 located in a recess 75. The dog 73 is provided at one end with a nose 62 which fits into the recess 7 0. It is also provided with a shoulder which sets against the lower side of the die 60 when the nose 62 penetrates to the corner of the recess 7 O. The spring 75 operates to push the nose of the dog 73 against the surface 72 and thus press the die 60 radially outward. The die-60 is held from an upward movement by means of in wardly extending flanges 77. By this means the die 60 is held against the inclined surface 61 and as the guide bars 55 are moved upward relative to the disk 25 the dies 60 are pushed outward not only by the work, but also by the dogs 73. When the guide bars 55 are carried outward suflicient so that the corners 65 slip under the shoulder 64L of the guide bars, the dies 60 are released from the work. By the operation of the nose 62 of each dog 73 which push upon the inclined surfaces 72 so as to hold the dies in their relieved position and thus the die guide bars and the dies are releasably locked against return movement. The machine may be easily re-set for a subsequent operation by merely striking with the hand on the upper portion of the machine, such as, the ring 49. The engagement is such that it is suflicient to hold the dies in their relieved positions against the operation of the spring &8 and yet with a slight jar or knock'they will be released from their locking position and fall to reengaging position by the operation of the springs 18 located about the pins 46.

At the same time that the dies 60 are relieved from the work, the handle 41 is freely movable and the operator is immediately notified thereby that the work has been completed.

By my invention is also provided a means for micrometrically adjusting the mecha nism so that the end of the taper of the completed pipe may be micrometrically varied. I have provided a means whereby upon a slight alteration of the machine an infinitesimal variation of the diameter of the threaded portion of the pipe will be produced. The machine may be so constructed that a single rotation of an element will cause a variation of five-one-thousandths of an inch in the diameter of the threaded portion of the pipe when completed. Any partial turn of the member will of course, produce a proportionate slight variation in the diameter of the threaded portion cut by the machine. The machine is constructed so that a number of rotations of the member will cause any desired change in the diameter of the threaded portion of the pipe cut by the machine. be constructed so as to produce less than five-thousandths of an inch variation in the diameter of the pipe by a single turn of the rotatable member.

In the form of the machine shown a support extends diametrically across the ring 49. The ring 49 is provided with diametrically disposed notches 81 while the support 80 is provided with outwardly extending ears or lugs 82 which may pass through the notches 81. The support 80 may then be turned angularly to the left a short distance whereby the lugs 82 will engage under the ring 49 and lock the support 80 to the mechanism. The burs 56 may be so located as to form a suitable stop for the support 80'and bring the support 80 in its proper position relative to the receding However, the machine maythereto. The lock nut 88 is provided with a feather 89 which extends into a key-way 90 which is formed in the stem 86. The lower end of the locking bur is provided with pins 91 which are so disposed as to penetrate the holes 92 formed in the boss when the locking nut 88 is in its lowermost position. A spring 93 is located intermediate the locking nut 88 and the corrugated head 87. The spring 93 operates to keep the locking nut 88 in its locked position, that is, to keep the pins 91 in the holes 92 so as to keep the nut 88 and stem 86 locked relative to the boss 85 and the support 80. The lower end of the stem 86 is provided with a tenent 100 in which is cut the groove 101. It is also provided with a flange 104 which sets against the under side of the support 80 and prevents complete withdrawal of the stem 86. A thrust plate 102 is provided with a pin 103 spring pressed by the spring 105. The groove 101 eXtend ing completely around the tenent, the thrust plate 102 may be easily placed upon the tenent by merely placing the thrust plate over the end of the tenent and giving the plate a thrust or push, whereupon the round nosed pin 103 will pass over the end of the tenent and penetrate the groove 102, and hold the thrust plate 102 against the flange 104:. The smaller sized thrust plates are preferably made like that shown in Fig. 11, while the larger sized one is made like that shown in Figs. 12 and 13 having the pin 109 in which is located the spring 108 covered by the strip 107. The thrust plate is so made as to strike against the end of the pipe operated upon. The thickness of the thrust plate 102 is such that when it rests against the flange 10% and the flange 104 is pressed against the under side of the support 80 and the lock nut or collar 88 is in its looking position on the boss 85 a base or standard for Zero measurement may be established. From this point micrometric meas urements may be made for, by releasing the locking bur 88, the thrust plate may be carried downward by rotation of the locking bur 88, the corrugated head 87 and the stem 86, which will thread through the boss 85. Each complete rotation of the stem 86 and the parts connected therewith will carry the stem 86 downward. or through the support 80, the width of a single thread located on the stem 86. When the pipe is in position so that it strikes against the thrust plate 102 it will begin to push the support 80 and carry with it the ring 49 with which the support engages by means of the lugs 82 and consequently carry with it the die guide bars whereupon the die guide bars will begin to recede from the zero point, that is, he diameter which corresponds to the zero point of the locking bur 88. The dies 60 will then begin to recede and perform their work until the corners pass the shoul ders 64.- and thereby become relieved.

In the operation of the cutter, the machine is secured to the pipe by means of the thumb screws 2. It is thrust into the screw feed 20 as far as possible until it strikes the lower teeth of the dies 60. The dog 29 is then so placed as to cause the rotation of the yoke 23 and the disk 26 in the proper direction. The lower teeth of the dies then shave and cut the first threads of the pipe. They continue to cut the first thread on the pipe until the end of the pipe strikes the thrust plate 102 whereupon the stem 86 and the support 80 is pushed forward by the thrust of the end of the pipe. This carries outward the die guide bars 55 and consequently the dies 60 are permitted to move outward under the pressure of the work to form the taper of the pipe. This will continue until the rounded corners 65 slip under the shoulders 64:, whereupon the dies are relieved from the work and the handle 11 falls. This is immediately noted by the operator, whereupon he removes the pipe while the die guide bars and the mecha nism connected therewith is held in its outermost position, thus protecting the die teeth and the other parts of the mechanism. It may then be reset for operation by merely striking the corrugated head 87 or the ring 49 and the die guiding mechanism will spring back by the operation of the springs -18. When the stem 86 is so located in the boss 85 that the flange 101 strikes against the under side of the support 80 the thrust plate 102 is in position so as to cut a standard size. To vary micrometrically this relation so as to increase infinitesimally the diameter of the taper threaded portion of the pipe the locking bur S8 is turned the desired number of revolutions to cause the desired variation in the threaded taper portion of the pipe.

In pipe cutting it is often desirable to first ream and face the pipe. By my invention I have provided a means which will permit the reaming and the facing of the end of the pipe which may be performed by the same mechanism with which the thread is cut. The reamer and facer device is provided with a plurality of reamers 110 and facers 111. The edges 112 and 113 of the reamers and facers, respectively, are cutting edges so as to cut the pipe. By reason of their difference in size they are placed in stepped relation. so that different sized pipes may be reamed and faced with the same reamer and facer. The reamer and facer is provided with a hub 114; which may be secured to the tenent 100 located on the stem 86. The hub 114 is also provided with a spring pressed detent 119 which is held in position by a spring 117 located on the outside of the hub 114; and secured in position by means of the bolts 118. The reamer and facer is also provided with arms 120 which extend substantially radially from the hub llt. When the reamer is placed in position on the tenent 100 the arms 120 6X tend into notches 121 which are formed in webs 122 formed on the bosses of housing 57 located on the plate 26. When the plate 26 is rotated by the operation of the handle 41 the reamer and facer will also be rotated so as to first ream the end of the pipe by the cutting edges 112 and when the pipe has been reamed suflicient so as to pass the cutting edges 112 they will strike against the face cutting edges 113 and the pipe will. be faced.

The reamer may be easily removed by merely pulling on the reamer so as to pull it from the tenent 100; the nose of the pin 119 will easily pass over the end of the tenent 100.

In the modified form of the disappearing feed engager shown in Fig. 15 the usual standard V-shaped thread may be used on the head screw 130 to feed the machine relative to the pipe. The disappearing feed engager 131 is also provided with the V- shaped thread so as to engage the thread of the lead screw 130. The disappearing feed engager 131. however, is attached to a threaded belt 132. A head 133 may be Keyed or otherwise secured to the bolt 132. The bolt 132 may be secured in the boss 13% by means of a flange or collar 135 connected to the belt 132 or formed integral therewith. The disappearing feed engager 131 is locked in feeding position by turning the head 133 so as to push the disappearing feed engager 131 inward into the shell 136 and so as to engage the thread of the feed screw 130. This will hold the disappearing feed engager in engaging position and prevent the inclined sides of the thread of the feed screw and the disappearing feed engager from pushing the disappearing feed engager into the boss 134:. To disengage the two parts, that is, to cause the disappearing feed engager to disappear, the head 133 is turned so as to draw the disappearing feed engager 131 into the boss 134. The disappearing feed engager is also provided with a pin 137 which moves in a slot 138 and prevents rotation of the disappearing feed engager when the head 133 is rotated. Also, in connection with the form of the invention shown in Fig. 17, I have provided a means which automatically locks the cylinder 136 to the lead screw 130. So that, by lifting the die cutting mechanism the two will not separate. However, the lead screw 130 may be shifted into the cylinder 136 by merely pushing down upon the upper part of the mechanism. A spring-pressed dog 140 is located in a housing 141. The end of the dog rides upon one of the threads of the lead screw 130. One corner of the end of the dog is beveled at substantially the same angle as the side of the thread. One portion of the thread extending substantially around the lead screw 130 is removed so that upon lifting the mechanism, theshell 136 will carry the dog 110 down to the portion 142 whereupon the end of the dog 140 will enter into the portion 142 and in between the portions of the thread located on opposite sides thereof. The non-beveled corner of the end ofthe dog 140 will engage the portion of the thread located below the portion of the cylinder from whence a portion of the thread is removed and will prevent the lead screw 130 being removed from the shell 136. The lead screw 130 however, may be easily shifted inwardly relative to the shell 136 by merely pushing upon the top of the machine which will cause the beveled corner of the dog 1 10 to ride up on top of the thread and permit the lead screw 130 to move downward relative to the shell 136. If, however, it is desired to remove the lead screw 130 from the shell 136 the dog 140 may be pushed outward by pushing upon the pin 143 so as to permit the non-beveled corner to pass over the thread.

The construction selected and described may be greatly modified in the arrangement and manufacture of its parts and in the substitution of elements having equivalent functions and such modifications may be used for many varied purposes and still contain the invention described in the claims.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is,-

1. In a die cutter, the combination of a plurality of dies, each die having a V- shaped notch, a spring pressed member operating in the notch to move the die radi ally outward.

2. In a die cutter, the combination of a plurality of dies, a V-shaped notch having one side perpendicular to the side of the die and the other side at an angle of 60 to the vertical side, a member operating on the inclined side of each notch to move the die radially.

3. In a die cutter, the combination of a plurality of dies, a V-shaped notch having one side perpendicular to the side of the die and the other side at an angle of 60 to the vertical side, a member operating on the in clined side of each notch to move the die radially, die guides against which the dies are pressed by the member.

4. In a die cutter, the combination of a plurality of dies, dies having an inclined surface, spring-pressed dogs for operating on the inclined surfaces to move the dies radially. I

5. In a die cutter, the combination of a plurality of dies, dies having an inclined surface, spring-pressed dogs for operating on the inclined surfaces to move the dies radially, die guides for permitting the dies to gradually recede from the work.

6. In a die cutter, the combination of a plurality of dies, each die having an inclined surface, spring-pressed dogs for operating on the inclined surfaces to move the dies radially, die guides for permitting the dies to gradually recede from the work, the die guides having means for placing the dies in open position.

7 In a die cutter, the combination of a plurality of dies, dies having an inclined surface, spring-pressed dogs for operating on the inclined surfaces to move the dies radially, die guides for permitting the dies to gradually recede from the work, the die guides having means for placing the dies in open position and locking the die guides in the die open position.

8. In a die cutter, the combination of a plurality of dies, spring pressed dogs for holding the dies in the cutter and yieldingly pressing the dies radially outward.

9. In a die cutter, the combination of a plurality of dies having inclined surfaces, spring-pressed dogs having jlinclined surfaces for holding the dies in the cutter and radially pressing the dies outward.

10. In a die cutter, the combination of a threaded feed mechanism having a. recess, a.

spring-pressed dog adapted to enter the recess, means for connecting the dog with the Work.

11. In a die cutter, the combination of a threaded feed mechanism having a recess, a

dog connected to the work adapted to ride on the thread and pnter the recess.

12. In a die cutter, the combination of a feed mechanism, having threads, a member having a dog adapted to engage the threaded feed mechanism to lock the feed mecha nism to the member.

ed member and having a cam surface at its outer end, a pin secured to the threaded member, an arm having a cam surface coacting with the cam surface fdrmed on the end of the boss and movable about the said pin to withdraw the said threaded member from engagement with the feed mechanism.

15. In a die cutter, the combination of a threaded feeding mechanism, a shell sur rounding the feeding mechanism, means for securing the shell to the work, a spring pressed threaded member for yieldingly engaging the thread of the feeding mechanism, a boss formed on the shell for engaging the threaded member and having a cam surface at its outer end, a pin secured to the threaded member, an arm having a cam surface coacting with the cam surface formed on the end of the boss and movable about the said pin to positively withdraw the said threaded member from engagement with the feed mechanism.

16. In a die cutter, the combination of a plurality of dies, a feed screw connected to the dies and having saw-tooth thread, the surface of the saw-teeth located at right angles to the axis following the inclined surfaces of the saw-teeth with reference to the direction that the dies are drawn in the cutting operation, a shell, means for securing the shell to the work, a spring pressed saw-- tooth threaded member for engaging the feed screw, the shell having a boss for containing the threaded member and having at its outer end a cam surface, a pin secured to the threaded member and extending through the end of the boss, an arm pivoted on the pin and having a cam surface located about the pin and coacting with the cam surface on the end of the boss to withdraw the threaded member from engagement with the feed screw.

17 In a die cutter, the combination of a feed screw, a shell surrounding the feed screw, means for connecting the shell with the work, the feed screw having a channel, a spring pressed dog located in the shell to ride on the thread of thefeed screw until the dog enters the channel.

18. In a die cutter, the combination of a feed screw, a shell surrounding the feed screw, means for connecting the shell with the work, the feed screw having a channel, a spring pressed dog located in the shell to ride on the thread of the feed screw until the dog enters the channel, the dog having a nose capable ofriding on the thread when the feed screw is moved axially without rotation.

19. In a die cutter, the combination of a feed screw, a. shell surrounding the feed screw, means for connecting the shell with the work, the feed screw having a channel, a spring pressed dog located in the shell to ride on the thread of the feed screw until the dog enters the channel, the dog having a beveled corner on one side and a square corner on the other to permit the dog to ride up on the thread of the feed screw when the feed screw is moved axially without rotation in its return direction, and to engage in the channel when it is moved in the opposite direction.

20. In a die cutter, the combination of a plurality of dies, die guides for permitting the dies to gradually recede from the work, spring pressed dogs, the dies and the spring pressed dogs having inclined surfaces and limiting surfaces to limit the outward move ment of the dies and to yieldingly retain the dies in position.

21. In a die cutter, the combination of a plurality of dies, die guides for permitting the dies to gradually recede from the work,

spring pressed dogs, the dies and the spring pressed dogs having inclined surfaces and limiting surfaces to limit the outward movement of the dies and to yieldingly retain the dies in position, the die guides having inwardly curved shoulders, the dies having an outwardly curved shoulder, the said shoulders and the inclined surfaces coacting to yieldingly hold the dies and the die guides in the die open position.

In testimony whereof, I have hereunto signed my name to this specification.

EDWVARD L. LIDKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

